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Duct making apparatus and method

a technology of making apparatus and ducts, which is applied in mechanical apparatus, other domestic objects, manufacturing tools, etc., can solve the problems of inefficiency of ducts according to known apparatuses

Active Publication Date: 2013-08-06
MESTEK MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during removal of the duct blank from the apparatus, the free edges in the pre-formed seam tend to separate, requiring the seam to be manually reformed prior to final closure.
Thus, making ducts according to the known apparatus is inefficient at least because the free edges must be manually aligned, bent, and closed.

Method used

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  • Duct making apparatus and method
  • Duct making apparatus and method
  • Duct making apparatus and method

Examples

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Embodiment Construction

[0013]Referring to FIGS. 1-33, the present invention is a duct making apparatus 100 used with a controller 101 for forming a closed duct blank 400 from a web stock such as a metal web 200. As part of a larger machine for inline manufacturing, shown in FIGS. 32 and 33, the controller 101 directs the apparatus 100 to bend the metal web 200 to form a complete duct blank 400 having a finished lock seam 300.

[0014]Throughout the following detailed description of drawings, the direction “forward” refers to a normal advancing motion of the metal web 200 from left to right in the drawings; the direction “rearward” refers to a retracting motion of the metal web 200 from right to left.

[0015]Referring to FIG. 1, the apparatus 100 includes a lower platen 110, an upper platen 120, a clamp beam 130, a table 140, a leaf 150, a subframe 160, a ram 170, and a sealant injector 180. The upper platen 120 is movably mounted to the apparatus 100. The clamp beam 130, the table 140, and the leaf 150 are mou...

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Abstract

A duct making apparatus bends a metal web to form a duct blank having a lock tab at a forward end and having a Z-fold at a rearward end. Prior to shearing off the duct blank from the metal web, the apparatus bends the duct blank to insert the lock tab into the Z-fold, and further bends the Z-fold to form a clinch tab holding the lock tab into the Z-fold. After shearing off the duct blank from the metal web, the apparatus clinches the clinch tab over the lock tab to form a completed duct blank.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation-in-part of, and claims priority to, U.S. patent application Ser. No. 12 / 243,489, filed on Oct. 1, 2008, hereby incorporated herein by reference in its entirety. This application also relates to subject matter disclosed in co-pending U.S. patent application Ser. No. 12 / 511,125, filed Jul. 29, 2009, of which relevant portions are hereby incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates generally to a duct making apparatus and, more particularly, to a duct making apparatus that forms and seals a lock seam to form a complete duct blank as part of an inline manufacturing process without intermediate manual handling, thereby providing an ease of manufacture.BACKGROUND OF THE INVENTION[0003]Ducts are extensively utilized in heating and ventilating systems to distribute heated or cooled air throughout a building structure. These ducts are commonly formed from differing ga...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): B21D11/00
CPCB21D5/04B21D39/02F16L9/17F16L9/003Y10T29/49936
Inventor BORWIG, MICHAEL C.WELTY, JOHN R.
Owner MESTEK MACHINERY